--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Chelsio Communications.
+ * All rights reserved.
+ */
+
+#include <rte_ethdev_driver.h>
+#include <rte_ethdev_pci.h>
+#include <rte_malloc.h>
+
+#include "common.h"
+#include "t4_regs.h"
+#include "t4_msg.h"
+#include "cxgbe.h"
+
+/*
+ * Figure out how many Ports and Queue Sets we can support. This depends on
+ * knowing our Virtual Function Resources and may be called a second time if
+ * we fall back from MSI-X to MSI Interrupt Mode.
+ */
+static void size_nports_qsets(struct adapter *adapter)
+{
+ struct vf_resources *vfres = &adapter->params.vfres;
+ unsigned int ethqsets, pmask_nports;
+
+ /*
+ * The number of "ports" which we support is equal to the number of
+ * Virtual Interfaces with which we've been provisioned.
+ */
+ adapter->params.nports = vfres->nvi;
+ if (adapter->params.nports > MAX_NPORTS) {
+ dev_warn(adapter->pdev_dev, "only using %d of %d maximum"
+ " allowed virtual interfaces\n", MAX_NPORTS,
+ adapter->params.nports);
+ adapter->params.nports = MAX_NPORTS;
+ }
+
+ /*
+ * We may have been provisioned with more VIs than the number of
+ * ports we're allowed to access (our Port Access Rights Mask).
+ * This is obviously a configuration conflict but we don't want to
+ * do anything silly just because of that.
+ */
+ pmask_nports = hweight32(adapter->params.vfres.pmask);
+ if (pmask_nports < adapter->params.nports) {
+ dev_warn(adapter->pdev_dev, "only using %d of %d provissioned"
+ " virtual interfaces; limited by Port Access Rights"
+ " mask %#x\n", pmask_nports, adapter->params.nports,
+ adapter->params.vfres.pmask);
+ adapter->params.nports = pmask_nports;
+ }
+
+ /*
+ * We need to reserve an Ingress Queue for the Asynchronous Firmware
+ * Event Queue.
+ *
+ * For each Queue Set, we'll need the ability to allocate two Egress
+ * Contexts -- one for the Ingress Queue Free List and one for the TX
+ * Ethernet Queue.
+ */
+ ethqsets = vfres->niqflint - 1;
+ if (vfres->nethctrl != ethqsets)
+ ethqsets = min(vfres->nethctrl, ethqsets);
+ if (vfres->neq < ethqsets * 2)
+ ethqsets = vfres->neq / 2;
+ if (ethqsets > MAX_ETH_QSETS)
+ ethqsets = MAX_ETH_QSETS;
+ adapter->sge.max_ethqsets = ethqsets;
+
+ if (adapter->sge.max_ethqsets < adapter->params.nports) {
+ dev_warn(adapter->pdev_dev, "only using %d of %d available"
+ " virtual interfaces (too few Queue Sets)\n",
+ adapter->sge.max_ethqsets, adapter->params.nports);
+ adapter->params.nports = adapter->sge.max_ethqsets;
+ }
+}
+
+void cxgbevf_stats_get(struct port_info *pi, struct port_stats *stats)
+{
+ t4vf_get_port_stats(pi->adapter, pi->pidx, stats);
+}
+
+static int adap_init0vf(struct adapter *adapter)
+{
+ u32 param, val = 0;
+ int err;
+
+ err = t4vf_fw_reset(adapter);
+ if (err < 0) {
+ dev_err(adapter->pdev_dev, "FW reset failed: err=%d\n", err);
+ return err;
+ }
+
+ /*
+ * Grab basic operational parameters. These will predominantly have
+ * been set up by the Physical Function Driver or will be hard coded
+ * into the adapter. We just have to live with them ... Note that
+ * we _must_ get our VPD parameters before our SGE parameters because
+ * we need to know the adapter's core clock from the VPD in order to
+ * properly decode the SGE Timer Values.
+ */
+ err = t4vf_get_dev_params(adapter);
+ if (err) {
+ dev_err(adapter->pdev_dev, "unable to retrieve adapter"
+ " device parameters: err=%d\n", err);
+ return err;
+ }
+
+ err = t4vf_get_vpd_params(adapter);
+ if (err) {
+ dev_err(adapter->pdev_dev, "unable to retrieve adapter"
+ " VPD parameters: err=%d\n", err);
+ return err;
+ }
+
+ adapter->pf = t4vf_get_pf_from_vf(adapter);
+ err = t4vf_sge_init(adapter);
+ if (err) {
+ dev_err(adapter->pdev_dev, "error in sge init\n");
+ return err;
+ }
+
+ err = t4vf_get_rss_glb_config(adapter);
+ if (err) {
+ dev_err(adapter->pdev_dev, "unable to retrieve adapter"
+ " RSS parameters: err=%d\n", err);
+ return err;
+ }
+ if (adapter->params.rss.mode !=
+ FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL) {
+ dev_err(adapter->pdev_dev, "unable to operate with global RSS"
+ " mode %d\n", adapter->params.rss.mode);
+ return -EINVAL;
+ }
+
+ /* If we're running on newer firmware, let it know that we're
+ * prepared to deal with encapsulated CPL messages. Older
+ * firmware won't understand this and we'll just get
+ * unencapsulated messages ...
+ */
+ param = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_PFVF) |
+ V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_PFVF_CPLFW4MSG_ENCAP);
+ val = 1;
+ t4vf_set_params(adapter, 1, ¶m, &val);
+
+ /*
+ * Grab our Virtual Interface resource allocation, extract the
+ * features that we're interested in and do a bit of sanity testing on
+ * what we discover.
+ */
+ err = t4vf_get_vfres(adapter);
+ if (err) {
+ dev_err(adapter->pdev_dev, "unable to get virtual interface"
+ " resources: err=%d\n", err);
+ return err;
+ }
+
+ /*
+ * Check for various parameter sanity issues.
+ */
+ if (adapter->params.vfres.pmask == 0) {
+ dev_err(adapter->pdev_dev, "no port access configured\n"
+ "usable!\n");
+ return -EINVAL;
+ }
+ if (adapter->params.vfres.nvi == 0) {
+ dev_err(adapter->pdev_dev, "no virtual interfaces configured/"
+ "usable!\n");
+ return -EINVAL;
+ }
+
+ /*
+ * Initialize nports and max_ethqsets now that we have our Virtual
+ * Function Resources.
+ */
+ size_nports_qsets(adapter);
+ adapter->flags |= FW_OK;
+ return 0;
+}
+
+int cxgbevf_probe(struct adapter *adapter)
+{
+ struct port_info *pi;
+ unsigned int pmask;
+ int err = 0;
+ int i;
+
+ t4_os_lock_init(&adapter->mbox_lock);
+ TAILQ_INIT(&adapter->mbox_list);
+ err = t4vf_prep_adapter(adapter);
+ if (err)
+ return err;
+
+ if (!is_t4(adapter->params.chip)) {
+ adapter->bar2 = (void *)adapter->pdev->mem_resource[2].addr;
+ if (!adapter->bar2) {
+ dev_err(adapter, "cannot map device bar2 region\n");
+ err = -ENOMEM;
+ return err;
+ }
+ }
+
+ err = adap_init0vf(adapter);
+ if (err) {
+ dev_err(adapter, "%s: Adapter initialization failed, error %d\n",
+ __func__, err);
+ goto out_free;
+ }
+
+ pmask = adapter->params.vfres.pmask;
+ for_each_port(adapter, i) {
+ const unsigned int numa_node = rte_socket_id();
+ char name[RTE_ETH_NAME_MAX_LEN];
+ struct rte_eth_dev *eth_dev;
+ int port_id;
+
+ if (pmask == 0)
+ break;
+ port_id = ffs(pmask) - 1;
+ pmask &= ~(1 << port_id);
+
+ snprintf(name, sizeof(name), "%s_%d",
+ adapter->pdev->device.name, i);
+
+ if (i == 0) {
+ /* First port is already allocated by DPDK */
+ eth_dev = adapter->eth_dev;
+ goto allocate_mac;
+ }
+
+ /*
+ * now do all data allocation - for eth_dev structure,
+ * and internal (private) data for the remaining ports
+ */
+
+ /* reserve an ethdev entry */
+ eth_dev = rte_eth_dev_allocate(name);
+ if (!eth_dev) {
+ err = -ENOMEM;
+ goto out_free;
+ }
+ eth_dev->data->dev_private =
+ rte_zmalloc_socket(name, sizeof(struct port_info),
+ RTE_CACHE_LINE_SIZE, numa_node);
+ if (!eth_dev->data->dev_private)
+ goto out_free;
+
+allocate_mac:
+ pi = (struct port_info *)eth_dev->data->dev_private;
+ adapter->port[i] = pi;
+ pi->eth_dev = eth_dev;
+ pi->adapter = adapter;
+ pi->xact_addr_filt = -1;
+ pi->port_id = port_id;
+ pi->pidx = i;
+
+ pi->eth_dev->device = &adapter->pdev->device;
+ pi->eth_dev->dev_ops = adapter->eth_dev->dev_ops;
+ pi->eth_dev->tx_pkt_burst = adapter->eth_dev->tx_pkt_burst;
+ pi->eth_dev->rx_pkt_burst = adapter->eth_dev->rx_pkt_burst;
+
+ rte_eth_copy_pci_info(pi->eth_dev, adapter->pdev);
+ pi->eth_dev->data->mac_addrs = rte_zmalloc(name,
+ ETHER_ADDR_LEN, 0);
+ if (!pi->eth_dev->data->mac_addrs) {
+ dev_err(adapter, "%s: Mem allocation failed for storing mac addr, aborting\n",
+ __func__);
+ err = -ENOMEM;
+ goto out_free;
+ }
+
+ if (i > 0) {
+ /* First port will be notified by upper layer */
+ rte_eth_dev_probing_finish(eth_dev);
+ }
+ }
+
+ if (adapter->flags & FW_OK) {
+ err = t4vf_port_init(adapter);
+ if (err) {
+ dev_err(adapter, "%s: t4_port_init failed with err %d\n",
+ __func__, err);
+ goto out_free;
+ }
+ }
+
+ cfg_queues(adapter->eth_dev);
+ print_adapter_info(adapter);
+ print_port_info(adapter);
+
+ err = init_rss(adapter);
+ if (err)
+ goto out_free;
+ return 0;
+
+out_free:
+ for_each_port(adapter, i) {
+ pi = adap2pinfo(adapter, i);
+ if (pi->viid != 0)
+ t4_free_vi(adapter, adapter->mbox, adapter->pf,
+ 0, pi->viid);
+ /* Skip first port since it'll be de-allocated by DPDK */
+ if (i == 0)
+ continue;
+ if (pi->eth_dev) {
+ if (pi->eth_dev->data->dev_private)
+ rte_free(pi->eth_dev->data->dev_private);
+ rte_eth_dev_release_port(pi->eth_dev);
+ }
+ }
+ return -err;
+}
Code Review / deb_dpdk.git / blobdiff